りか
science (inc. mathematics, medicine, etc.); natural science
She has to study science.
・logic
・arrangement
・reason
・justice
・truth
・department
・course
・section
science department (university);science course
science (as a school subject)
りかだいがく
university of science
りかしつ
science classroom;(school) science lab
りかねんぴょう
chronological scientific tables
りかけい
science course
りかばなれ
declining interest in the natural sciences (among youth)